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| Author | Güntürkün, O.; Kesch, S. | ||||
Title  |
Visual lateralization during feeding in pigeons | Type | Journal Article | ||
| Year | 1987 | Publication | Behavioral Neuroscience | Abbreviated Journal | Behav. Neurosci. |
| Volume | 101 | Issue | 3 | Pages | 433-435 |
| Keywords | use of right vs left eye, amount & accuracy of pecking in food discrimination task, homing pigeons, implications for lateralization of cerebral function | ||||
| Abstract | In a quasi-natural feeding situation, adult pigeons had to detect and consume 30 food grains out of about 1,000 pebbles of similar shape, size, and color within 30 s under monocular conditions. With the right eye seeing, the animals achieved a significantly higher discrimination accuracy and, consequently, a significantly higher proportion of grains grasped than with the left eye seeing. This result supports previous demonstrations of a left-hemisphere dominance for visually guided behavior in birds. (PsycINFO Database Record (c) 2010 APA, all rights reserved) | ||||
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| Publisher | US: American Psychological Association | Place of Publication | Editor | ||
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| ISSN | 1939-0084(Electronic);0735-7044(Print) | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ 1987-30501-001 | Serial | 5588 | ||
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| Author | de Latude, M.; Demange, M.; Bec, P.; Blois-Heulin, C. | ||||
| Title |
Visual laterality responses to different emotive stimuli by red-capped mangabeys, Cercocebus torquatus torquatus | Type | Journal Article | ||
| Year | 2009 | Publication | Animal Cognition | Abbreviated Journal | Anim. Cogn. |
| Volume | 12 | Issue | 1 | Pages | 31-42 |
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| Abstract | Abstract: Hemispheric asymmetry in emotional perception has been put forward by different theories as the right hemisphere theory or the valence theory. But no consensus was found about the role played by both hemispheres. So, in order to test the different theories, we investigated preferential use of one eye in red-capped mangabeys, at the individual as well as at the group level. In this study we investigated the influence of the emotional value of stimuli on the direction and strength of visual preference of 14 red-capped mangabeys. Temporal stability of the bias of use of a given eye was evaluated by comparing our current results to those obtained 2.5 months previously. Two experimental devices, a tube and a box, tested five different stimuli: four food types varying in palatability and a neutral stimulus. The subjects" food preferences were evaluated before testing the laterality. The mangabeys used their left eyes predominantly at the group level for the tube task. The majority of the subjects showed a visual preference at the individual level for the box task, but this bias was not present at the group level. As the palatability of the stimuli increased, the number of lateralized subjects and the number of subjects using preferentially their left eye increased. Similarly, the strength of laterality was related to food preference. Strength of laterality was significantly higher for subjects using their left eye than for subjects using their right eye. Preferential use of a given eye was stable over short periods 2.5 months later. Our data agree with reports on visual laterality for other species. Our results support the valence theory of a hemispheric sharing of control of emotions in relation to their emotional value. | ||||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 4721 | ||
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| Author | Karenina, K.; Giljov, A.; Baranov, V.; Osipova, L.; Krasnova, V.; Malashichev, Y. | ||||
| Title |
Visual Laterality of Calf–Mother Interactions in Wild Whales | Type | Journal Article | ||
| Year | 2010 | Publication | PLoS ONE | Abbreviated Journal | PLoS ONE |
| Volume | 5 | Issue | 11 | Pages | e13787 |
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| Abstract | Background Behavioral laterality is known for a variety of vertebrate and invertebrate animals. Laterality in social interactions has been described for a wide range of species including humans. Although evidence and theoretical predictions indicate that in social species the degree of population level laterality is greater than in solitary ones, the origin of these unilateral biases is not fully understood. It is especially poorly studied in the wild animals. Little is known about the role, which laterality in social interactions plays in natural populations. A number of brain characteristics make cetaceans most suitable for investigation of lateralization in social contacts. Methodology/Principal Findings Observations were made on wild beluga whales (Delphinapterus leucas) in the greatest breeding aggregation in the White Sea. Here we show that young calves (in 29 individually identified and in over a hundred of individually not recognized mother-calf pairs) swim and rest significantly longer on a mother's right side. Further observations along with the data from other cetaceans indicate that found laterality is a result of the calves' preference to observe their mothers with the left eye, i.e., to analyze the information on a socially significant object in the right brain hemisphere. Conclusions/Significance Data from our and previous work on cetacean laterality suggest that basic brain lateralizations are expressed in the same way in cetaceans and other vertebrates. While the information on social partners and novel objects is analyzed in the right brain hemisphere, the control of feeding behavior is performed by the left brain hemisphere. Continuous unilateral visual contacts of calves to mothers with the left eye may influence social development of the young by activation of the contralateral (right) brain hemisphere, indicating a possible mechanism on how behavioral lateralization may influence species life and welfare. This hypothesis is supported by evidence from other vertebrates. |
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| Publisher | Public Library of Science | Place of Publication | Editor | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5297 | ||
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| Author | Farmer, K.; Krueger, K.; Byrne, R. | ||||
| Title |
Visual laterality in the domestic horse (Equus caballus) interacting with humans | Type | Journal Article | ||
| Year | 2010 | Publication | Animal Cognition | Abbreviated Journal | Anim. Cogn. |
| Volume | 13 | Issue | Pages | 229-238 | |
| Keywords | Horse – Laterality – Eye preference – Emotion – Vision | ||||
| Abstract | Most horses have a side on which they are easier to handle and a direction they favour when working on a circle, and recent studies have suggested a correlation between emotion and visual laterality when horses observe inanimate objects. As such lateralisation could provide important clues regarding the horse’s cognitive processes, we investigated whether horses also show laterality in association with people. We gave horses the choice of entering a chute to left or right, with and without the passive, non-interactive presence of a person unknown to them. The left eye was preferred for scanning under both conditions, but significantly more so when a person was present. Traditionally, riders handle horses only from the left, so we repeated the experiment with horses specifically trained on both sides. Again, there was a consistent preference for left eye scanning in the presence of a person, whether known to the horses or not. We also examined horses interacting with a person, using both traditionally and bilaterally trained horses. Both groups showed left eye preference for viewing the person, regardless of training and test procedure. For those horses tested under both passive and interactive conditions, the left eye was preferred significantly more during interaction. We suggest that most horses prefer to use their left eye for assessment and evaluation, and that there is an emotional aspect to the choice which may be positive or negative, depending on the circumstances. We believe these results have important practical implications and that emotional laterality should be taken into account in training methods. | ||||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 4953 | ||
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| Author | Parr, L.A.; de Waal, F.B. | ||||
| Title |
Visual kin recognition in chimpanzees | Type | |||
| Year | 1999 | Publication | Nature | Abbreviated Journal | Nature |
| Volume | 399 | Issue | 6737 | Pages | 647-648 |
| Keywords | Animals; *Behavior, Animal; Face; Female; Male; Pan troglodytes/*physiology | ||||
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| Language | English | Summary Language | Original Title | ||
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| Series Volume | Series Issue | Edition | |||
| ISSN | 0028-0836 | ISBN | Medium | ||
| Area | Expedition | Conference | |||
| Notes | PMID:10385114 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 195 | ||
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| Author | Vokey, J.R.; Rendall, D.; Tangen, J.M.; Parr, L.A.; de Waal, F.B.M. | ||||
| Title |
Visual kin recognition and family resemblance in chimpanzees (Pan troglodytes) | Type | Journal Article | ||
| Year | 2004 | Publication | Journal of comparative psychology (Washington, D.C. : 1983) | Abbreviated Journal | J Comp Psychol |
| Volume | 118 | Issue | 2 | Pages | 194-199 |
| Keywords | Animals; Female; Male; Pan troglodytes; Random Allocation; *Recognition (Psychology); *Visual Perception | ||||
| Abstract | The male-offspring biased visual kin recognition in chimpanzees (Pan troglodytes) reported by L. A. Parr and F. B. M. de Waal (1999) was replicated with human (Homo sapiens) participants and a principal components analysis (PCA) of pixel maps of the chimpanzee face photos. With the same original materials and methods, both humans and the PCA produced the same asymmetry in kin recognition as found with the chimpanzees. The PCA suggested that the asymmetry was a function of differences in the distribution of global characteristics associated with the framing of the faces in the son and daughter test sets. Eliminating potential framing biases, either by cropping the photos tightly to the faces or by rebalancing the recognition foils, eliminated the asymmetry but not human participants' ability to recognize chimpanzee kin. | ||||
| Address | Department of Psychology and Neuroscience, University of Lethbridge, Lethbridge, Alberta, Canada. vokey@uleth.ca | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0735-7036 | ISBN | Medium | ||
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| Notes | PMID:15250806 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 171 | ||
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| Author | Plotnik, J.; Nelson, P.A.; de Waal, F.B.M. | ||||
| Title |
Visual field information in the face perception of chimpanzees (Pan troglodytes) | Type | Journal Article | ||
| Year | 2003 | Publication | Annals of the New York Academy of Sciences | Abbreviated Journal | Ann N Y Acad Sci |
| Volume | 1000 | Issue | Pages | 94-98 | |
| Keywords | Animals; *Facial Expression; Pan troglodytes; Recognition (Psychology); Visual Fields/*physiology; Visual Perception/*physiology | ||||
| Abstract | Evidence for a visual field advantage (VFA) in the face perception of chimpanzees was investigated using a modification of a free-vision task. Four of six chimpanzee subjects previously trained on a computer joystick match-to-sample paradigm were able to distinguish between images of neutral face chimeras consisting of two left sides (LL) or right sides (RR) of the face. While an individual's ability to make this distinction would be unlikely to determine their suitability for the VFA tests, it was important to establish that distinctive information was available in test images. Data were then recorded on their choice of the LL vs. RR chimera as a match to the true, neutral image; a bias for one of these options would indicate an hemispatial visual field advantage. Results suggest that chimpanzees, unlike humans, do not exhibit a left visual field advantage. These results have important implications for studies on laterality and asymmetry in facial signals and their perception in primates. | ||||
| Address | Department of Animal Science, Cornell University, Ithaca, New York 14853, USA. jmp63@cornell.edu | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 0077-8923 | ISBN | Medium | ||
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| Notes | PMID:14766624 | Approved | no | ||
| Call Number | refbase @ user @ | Serial | 175 | ||
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| Author | Yamazaki, Y.; Shinohara, N.; Watanabe, S. | ||||
| Title |
Visual discrimination of normal and drug induced behavior in quails (Coturnix coturnix japonica) | Type | Journal Article | ||
| Year | 2004 | Publication | Animal Cognition | Abbreviated Journal | Anim. Cogn. |
| Volume | 7 | Issue | 2 | Pages | 128-132 |
| Keywords | Animals; Behavior, Animal/*drug effects; Classification; Coturnix/*physiology; *Discrimination Learning; *Generalization (Psychology); Ketamine/pharmacology; Male; Methamphetamine/pharmacology; *Pattern Recognition, Visual; Video Recording; Visual Perception | ||||
| Abstract | The ability to discriminate the physical states of others could be an adaptive behavior, especially for social animals. For example, the ability to discriminate illness behavior would be helpful for avoiding spoiled foods. We report on an experiment with Japanese quails testing whether these birds can discriminate the physical states of conspecifics. The quails were trained to discriminate between moving video images of quails injected with psychoactive drugs and those in a normal (not injected) condition. Methamphetamine (stimulant) or ketamine (anesthetic) were used to produce drug-induced behaviors in conspecifics. The former induced hyperactive behavior and the latter hypoactive behavior. The subject quails could learn the discrimination and showed generalization to novel images of the drug-induced behaviors. They did not, however, show discriminative behavior according to the type and dosage of the drugs. Thus, they categorized the behavior not on the basis of degree of activity, but on the basis of abnormality. | ||||
| Address | Biopsychologie, Institut fur Kognitive Neurowissenschaft, Fakultat fur Psychologie, Ruhr-Universitat Bochum, 44780 Bochum, Germany. yumyam@bio.psy.ruhr-uni-bochum.de | ||||
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| Language | English | Summary Language | Original Title | ||
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| ISSN | 1435-9448 | ISBN | Medium | ||
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| Notes | PMID:15069613 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 2527 | ||
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| Author | Blakeman, N.E.; Friend, T.H. | ||||
| Title |
Visual discrimination at varying distances in Spanish goats | Type | Journal Article | ||
| Year | 1986 | Publication | Appl Anim Behav Sci | Abbreviated Journal | |
| Volume | 16 | Issue | Pages | ||
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| Call Number | Equine Behaviour @ team @ Blakeman1986 | Serial | 6251 | ||
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| Author | Lomas, C.A.; Piggins, D.; Phillips, C.J.C. | ||||
| Title |
Visual awareness | Type | Journal Article | ||
| Year | 1998 | Publication | Applied Animal Behaviour Science | Abbreviated Journal | Appl. Anim. Behav. Sci. |
| Volume | 57 | Issue | 3-4 | Pages | 247-257 |
| Keywords | Visual awareness; Colour vision; Rhythm | ||||
| Abstract | Awareness varies between different species and humans can never truly appreciate what it is like to be another individual, either of the same species or another. Visual perceptual faculties provide some evidence of the extent to which domesticated animals derive information from objects in their environment, whilst changes in behaviour resulting from different visual stimuli can also provide valuable information on the state of visual awareness. Extensive processing of potentially visual information must occur in all domesticated species, but is much less well understood than purely sensory based information. For example, sensory aspects of colour vision are reasonably well understood, but the role of wavelength variables in an animal's cognition and its colour experience is not clear. Considerable use is made of diurnal changes in photoperiod to synchronise endogenous rhythms to particular times of the day and the year. Variation in light intensity in natural images is also important for social reasons for animals to be able to discriminate between, e.g., different faces, but little is known about intensity preferences or the effects of intensity on behaviour. It appears likely that in many cases visual stimuli represent some of the most important influences on an animal's awareness, either alone or in combination with, e.g., olfactory cues. However, a much greater understanding of their processing is required before we can make useful deductions about visual awareness in domesticated animals. | ||||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 4309 | ||
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